I just picked up this radio 2 months ago. It was pretty easy to get it going again since it was just one of the leads had disconnected from the output transformer. However, it still needs some more work since it hums quite a bit, and seems to be a bit flaky in the tuning. I had difficulty locating a location station a few times in a row.

However, I have no idea what I have here. The screws that held the backpanel on say SEICO and I found a electrolytic cap. inside with the same branding.

The backpanel says:FM-AM RADIO6 TUBE PLUS 2 DIODE

Here are some photos

What is it? I haven't taken pictures of the internals yet, but I can if that will help..

Pictures always help, but, I believe that is the brand of radio. I believe it was made in Japan.Your electrolytics are bad, and, If I know my 60's Japanese radios correctly, you will also need to replace all the paper capacitors, as well.Until these things are done, the radio will not be reliable.By the way... Welcome to the forums.Bill Cahill

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I'm not sure of the model, but it looks very similar to my Sansei Polaris. It may be the same chassis in a different cabinet. If it is a Sansei, I can tell you that there is almost no documentation available for this brand. When you start replacing the caps, would you mind sending me some pictures of the underside of the chassis? Mine has a burned resistor that I can't find a value for. Sorry the picture is cut off.Dave

Hi,These are probably like the little AM only Japanses sets. Many names were used but the chassis were the same. Nice looking set though, and replace the filter caps first, then the others, after you have tested the filters for operation. That keeps new restorers from making a mistake, and having a hard time finding it. Replacing one or two caps at a time, and the radio doesn't now work, you will know exactly what parts to check for a miswire.

As far the logo, it was usually a small cut piece of brass with the name printed in white or black ink. I'd cut a piece from sheet brass to fit into the space. Get some water slide decal material and print the brand name in an appropriate font. Coat the decal with clear to protect the ink. Slide the decal on the brass, allow to dry. Coat the entire piece with clear. Now, glue it in place.

From a quick search, I found a Sansei made Zephyr set like yours. The Zephyr and Polaris might be among other names for the same set.Image from Radiomuseum

Let me know if you want a close of of any specific sections of the circuit.

My replacement capacitors came in this week and I swapped out all the paper and electrolytic caps. Now my hum is gone but it exposed another issue. Distortion, I tuned in a music station and audio was extremely distorted in the mid and low end. The quality is fine for voice, but music is pretty much unbearable.

Not likely the transformer.One test of speaker.With radio turned off, gently push on center os cone at voice coil. Be careful not to rip it.If you feel a rubbing from voice coil, or, it doesn't move, that's likely the culprit.Bill Cahill

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Then the problem is the plates on your tuner are shorting out.That is repairable, but, tricky.You need good eyes, light, and, patience. Check carefully to see where it's making the noise.Very gentle pushing on plates with an insulated tool should eventually fix it. Plates are likely bent enough to cause problems. With radio un plugged, you should be able to put an ohm meter from the terminal that has the lower sections to the frame of the tuner.Make sure no coils are accross. They often are. If so, disconnect that wire to the tuner for this.You should get infinity on the meter.If at any points you see resistance readings, there is your problem area. Carefully probe, and, eye ball to find the bent plates on rotor.Bill CahillCAUTION!Manny radios, at least one of the sections has positive DC voltage on it, and, you can get badly shocked. I would really reccommend any probing around be done without power on the set.

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The variable capacitor was shorting out but not inside itself. There are two short coils, one nested inside the other stacked on the variable capacitor. Its visible on the left side of the photo I posted of the bottom on the chassis.

Upon inspection those coils were touching so I tweaked the outer coil. Now it seems to tune in just fine.

Now my radio is in full working order. Thank you so much for your help. I'll make sure to post a final picture once I finish cleaning and reassembly.